import React from 'react';
import ReactDOM from 'react-dom';
// import App from './01-组件的定义/App';
// import App from "./02-组件生命周期/App"
import App from "./03-组件间通信/02-父传子通信-类组件.js"

ReactDOM.render(
    <App />,
  document.getElementById('root')
);

